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Old 08-22-2013, 01:15 PM   #1
Stage13
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Default how big of injectors can u run with stock 05 sti ecu

Whats the biggest the stock ecu will allow u to tame? Im looking into 1600s but wpuld like 2150s for safety but dont wanna go aem quite yet mainly for $$ reasons
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Old 08-22-2013, 07:01 PM   #2
Paidfor
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That's some BIIIGGGG injectors brother..if you don't mind my asking.....what? are you gonna do with this car ? lol


Im not sure how accurate itll be but you can scale injectors to like 9999.99 in opensource if you want to. Of course youd have to tweak the hell out of the MAF, latencies and a bunch of other **** to get it right?

Doable tho I sure.
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Old 08-22-2013, 07:59 PM   #3
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Well I just ordered aem stand alone to be safe but im currently 600 whp on 28psi we are hoping for 40 psi and 700+ in my 05 sti swapped gc my motor is very well built benson sleeves cp pistons turbo tuff rods h11 h3ad studs arp case studs the hole 9 yards on a 6262 and e85
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Old 08-22-2013, 10:22 PM   #4
renosubby
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Gonna need some better studs for 40psi. You are gonna lift the heads.
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Old 08-23-2013, 06:43 AM   #5
Stage13
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Coswortg h11 head studs wont hold ?
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Old 08-23-2013, 07:32 AM   #6
renosubby
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I'm seeing people needing 13mm to 1/2 in
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Old 08-23-2013, 08:51 AM   #7
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I've run id2000's on stock 32 bit ecu's before without issue.

Steve @ Pullz-On Tuning
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Old 08-23-2013, 04:55 PM   #8
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Well dam lol I ordered aem already oh well anybody need an 05 sti ecu !
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Old 08-24-2013, 04:27 PM   #9
fastblueufo
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Syick with the aem. Less headache on a build like yours.
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Old 08-27-2013, 06:05 PM   #10
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Quote:
Originally Posted by dux10 View Post
I've run id2000's on stock 32 bit ecu's before without issue.

Steve @ Pullz-On Tuning
How hard were they to dial in @ low loads?

When I did some on a 16bit Carberry ROM I had to run full time open loop for smoothest operation at low loads. In closed loop it would buck sometimes on slow acceleration (like stop sign --> school zone type daily driver stuff), same map forced open it was fine and smooth. Any issues like that on the 32bit ROM?

Any time you needed to get on it, the tuning was fine with closed loop, but just that really light stuff AFR would oscillate some.
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Old 08-29-2013, 11:13 AM   #11
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Quote:
Originally Posted by Concillian View Post
How hard were they to dial in @ low loads?

When I did some on a 16bit Carberry ROM I had to run full time open loop for smoothest operation at low loads. In closed loop it would buck sometimes on slow acceleration (like stop sign --> school zone type daily driver stuff), same map forced open it was fine and smooth. Any issues like that on the 32bit ROM?

Any time you needed to get on it, the tuning was fine with closed loop, but just that really light stuff AFR would oscillate some.

If you set target afr at lower loads/idle to say 13.5ish its good. The problem with my car was the 4" maf housing. The car drove well enough to drive, but it was not ideal. That car went SD obviously. lol With a normal sized maf housing, it would've been good though. I used CL compensations to dial in a lower AFR at idle/low loads. Other tuners advise tweaking the O2 scaling, but I didn't like that idea.

Steve @ Pullz-On Tuning
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Old 09-13-2013, 04:54 PM   #12
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Doing it in the compensations seems the right way. That way you can run richer only at the load cells you need to, then lean out the cells that matter more for MPGs.

Tweaking the O2 scaling would change all CL loads. Seems crude.

Full time OL is working well, but I'll try CL @ richer in the low load cells too.
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Old 09-13-2013, 09:32 PM   #13
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Quote:
Originally Posted by Concillian View Post
Doing it in the compensations seems the right way. That way you can run richer only at the load cells you need to, then lean out the cells that matter more for MPGs.

Tweaking the O2 scaling would change all CL loads. Seems crude.

Full time OL is working well, but I'll try CL @ richer in the low load cells too.
As Steve said, try richening it up at low loads. Try 13.5:1 at idle, 14.0:1 while cruising. I'm assuming you're on 16 bit?
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Old 09-15-2013, 11:11 AM   #14
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Quote:
Originally Posted by BlazeRex View Post
As Steve said, try richening it up at low loads. Try 13.5:1 at idle, 14.0:1 while cruising. I'm assuming you're on 16 bit?

Eric, you can target 14.7 beyond 2000rpm. Ithink between 1200-2000 I targetted 14.0

Steve @ Pullz- On Tuning
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